Another thing we need to do in post-installation part is the vManage web certificate installation which resolve the issue of browser invalid service.
Go to Admin > Settings
a. Generate CSR
b. CSR Installation
Note: Once the installation is completed, In order for Cert. to take effect we need to reboot the server. Make sure the CSR is updated before reboot.
To Reboot go to Maintenance > Device Reboot > vManage